Caliper-gage.



H. HESS.

CALIPER GAGE.

APPLICATION FILED ocT. I8, 1912.

1,172,359. Patented Feb. 22,1916.

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HENRY nnss, or PHILADmienne,` PENNSYLVANIA. y

CAMPER-GAGE.

Application filed October 18, 1912. Serial No..726,414.

/ all whom t may Concern: i

Be it known that I, HENRY Huss, a citizen of thevUnited States,'residing at Philadelphia, in the county of .Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Cali-V per-Gages, of which the following is a specification, reference being had therein tothe accompanying drawing.. y

My invention rela tes to caliper gages Ysuch as are used in mechanics for example for measuring interiors and exteriors.

An object of the present invention isk to enable the practical and advantageous employment of preformed hardened steel spheres in caliper gages.

Another object hereof is to afford an etlicient and at the same time durable and inexpensive fixed-dimension*caliper gage, that is to say one in which there is no adjustment in use, but in the use of which on tliecontrary the work is required to be brought to a dimension corresponding with that of the gage. v

Other object-s and advantages hereof will appear in the description following or will be apparent to those skilled inthe art.

I will first describe rone or more embodiments of my invention, and will thereafter point out the novel features in the claims.

In the accompanying drawings forming a part hereof, Figure 1 is an elevation partly broken away of a form of fixed-dimension caliper gage embodying my invention. `Fig.

2 is a cross-section taken on the plane 2 2 of Fig. 1. Fig. 3 is an elevation of a modified form of gage. Fig. L is a section taken on the plane 4 1 of Fig. 3. Fig. 5 shows a modified form for the right hand end of Fig. 3 in which adjustment of gage dimensions may be effected by shifting the 'single sphere.

Similar letters of reference designate corf responding parts in the several figures 'of the drawings.

As one part of the present'invention, I propose to employ a plurality of preformed hardened steel spheres for affording'the contact points ofthe Gage. Thus Ythe spheres A, A and B. B shown as affording the necessary Contact points to enable the gage to be employed both for internal calipering and external calipering. A supportk C supports one Aof the spheres A and one of the spheres B, and a support D supports the remaining spheres.

. According to one part of the present in- Speeicaton of Letters Patent.

Patented Feb. 22, 191.6.

vention a fixedfdimension gage is afforded provided with the spherical contacts but in which the supports C and D are not integral but are distinct and separate members lfixedly associated or connected in a vpredetermined relation. The Vsupports C andy D are opposed to each other soasto properly maintain the Contact spheres in opposed relations, and to hold the supports C and D together any holding means may be employed such as the clamping means illustrated, consisting in a frame or yokev E havinga securing device or screw e, by which pressure may be applied. The portion of the frame E opposite the lscrew e may have a slight projection e so as to bear upon thek support C inv a manner the utility of which will be apparent.

Instead of haviiigpthe two supports in direct contact I prefer to separate them by an interposed member F, or preferably a plurality of such members F, F as seen in Fig. 2, Vand in fact I prefer a third interposed member G, thus giving three points of separation and rendering more exact andY stable the relations of the supports@ and D.

The supports C and D are properly shapedl i at f to accommodate the spheres F, and are oppositely notched at g, g to acconunodate y the sphere Gr.

It has been hereinbefore stated that preformed spheresare preferred to afford the gaging vcontacts or contact pieces, and the advantages thereof have already been pointed out by me, for example in my prior Vapplication Serial No. 587,703, filed Oct. 18, 1910. In the present case and on account of the same advantages, I prefer that the interposed members F, F, G'shall also consist of preformed spheres. Y v

We thus have in Figs. 1 and 2 `a complete `caliper gage inwhich the two 4interposed members or spheres F, F aresupposed to be of identical size and the member or sphere G of such size as to bring the contact spheres A, A, B, B into proper relation. The clamping device E is seen to be located between the Y spheres F.. F, G, thus rendering permanent the complete caliper gage.- Infone" sense the two spheres F, F eoperate'to act as a cylindrical pin or pivot.' y I An interchange for the sphere G of another'sphere of larger or smaller size would constitute of the instrumenta new gage having a different dimension.y Therein lies an advantage of the `described gage, for not only does-.theinterchange ofV spheres at Gl i permit standardization, but a series of spheres of graded sizes might be employed to be inserted as desired while the clamp E is loosened, thus throwing the contacts A, A, B, B apart or together' by predetermined distances, and thus rendering a single gage available `for a number of sizes. Y Attlie same timeit is a yfixed-dimensiongage, for there is no adjustment in use. Interchange could also be made of the spheres F, F. The entire matter of interchange is capable of being easily systenimatized.

Referring now to the modification of Figs. 3 and Ll, that differs from the first forni in several respects, we have the contact spheres A., A,- B, B as before. The supports HV1 therefor, however, are held or clamped to gether in opposed relation not through a yoke or frame, but merely by means of one 0r preferably two bolts 1i., K, each. entered in one ofthe supports, for example J, at a recessed. or countersunlr portion j thereof, and passing `more or less loosely through such support into screw-threaded engagement with threaded bore i inthecther sup-y port. The looseness of the bolt permits sutlicient play for interchange of the interposed members or separators F, F, Gf, when the bolts are loosened.

A' further modification may be provided as indicated in Fig. 5 wherein the ends of thetwo supports J, H opposite to the conact spheres A, B' are prolonged, as indicated at L, L, and at least one andY preferably both of them provided with aseries of notches g', g2, etc., whereby the interposed sphere G may be shifted from notch f/ to notch g or to notch g2, etc., thus affording a means of resetting the .gage whenthe clamping screws K, K are loosened to alter the gages dimension as determined by the relat've positions of contacts A, A, B, B.

Specifically while 1 have shown and referredr to a pair of opposed contact supports, this does notnegative that there might be a greater numbenand it will be therefore un-l derstood that by a pair 1 mean at least a pair.

1t will be seen that by the foregoing described embodiments, 1 hare attained theE objects andV advantages hereinbefore .recited and referred to.

taince many features `hereof may be einployed without other features and mav be variously modilied in detail and form, 1 do not wish to be limited to mattersvof detail or form excepting as set forth in t-he appended claims.

YWhat 1 claim and desire to secure by Let-- ters Patent is;

1. A caliaer @awe corn risinU in combinat: C) b tion a pair of opposed supports provided. with gaging point contacts, three separate spheres located between said supports, andmeans for holding'or clamping the whole to-V gether; said spheres being arrangediin triangle witl its base transverse to the length ofthe gage 4and the single sphere at the 1 a per being readily detachable whereby alterf ations of the gagedimension may be effected by change of the single'sphere at the apex.

2. A'caliper gage comprising combination a pair of opposed supports provided with gaging point contacts, a :pluralityof] interposed spherical pieces located between said supports, namely, two `arranged in a vrided on the gaging portions of said siip ports, a plurality of interposed pieces located between and holdingesaid supports` s iaced a aart at one `oint in the gane'length.

and an interposed piece at another point, the latter being readily detachable whereby it inavbe interchanged for another sphere .Y

of different size forV altering the gage size, and means for detacliably clamping the whole together with said Contact lspheres in predetermined gaging relation.

e. A caliper gage comprising incombina tion, opposed supports, contact spheres kprovided on the gaging portions of saidy sup-1 ports, pivot means separating the supports at a pointremoyed from the gagintr contacts, and an'interposed separator at another point, the latter bein.U readily detachable whereby it may be interchanged `for another sphere of di'lferent size and means for detachably clamping the whole together with said contact spheres in predetermined gaging rela-` tion.

5. Acaliper gage comprising in combina= tion, apair of opposed supports provided with gaging contacts and shaped to receive around separating pivot meansV between them., a round separating pivot Apiece interposed .between said supports, said supports extending substantially beyond saidround.

aivot means, and liarin" a series of notches'. i f t? for receiving a round piece, a round piece engaged in one of said notches selectively, and

means for clamping the whole together.Y

In testimony whereof 1 affix my signature in presence of two witnesses.

neuer nnss.l

TWitnesses 1 Y CHARLES S. BUTLER, @LGA A. HOLLAND.

Copies of this patentmay be obtained for, live cents each, by addressing the Commissioner .of Patents,

Washington, D. C. 

